FinViz Screener

Overview

Translate natural-language stock screening requests into FinViz screener filter codes, build the URL, and open it in Chrome. No API key required for public screener; FINVIZ Elite is auto-detected from $FINVIZ_API_KEY for enhanced functionality.

Key Features:

• Natural language → filter code mapping (Japanese + English)
• URL construction with view type and sort order selection
• Elite/Public auto-detection (environment variable or explicit flag)
• Chrome-first browser opening with OS-appropriate fallbacks
• Strict filter validation to prevent URL injection

When to Use This Skill

Explicit Triggers:

• “高配当で成長している小型株を探したい”
• “Find oversold large caps near 52-week lows”
• “テクノロジーセクターの割安株をスクリーニングしたい”
• “Screen for stocks with insider buying”
• “FinVizでブレイクアウト候補を表示して”
• “Show me high-growth small caps on FinViz”
• “配当利回り5%以上でROE15%以上の銘柄を探して”

Implicit Triggers:

• User describes stock screening criteria using fundamental or technical terms
• User mentions FinViz screener or stock filtering
• User asks to find stocks matching specific financial characteristics

When NOT to Use:

• Deep fundamental analysis of a specific stock (use us-stock-analysis)
• Portfolio review with holdings (use portfolio-manager)
• Chart pattern analysis on images (use technical-analyst)
• Earnings-based screening (use earnings-trade-analyzer or pead-screener)

Workflow

Step 1: Load Filter Reference

Read the filter knowledge base:

cat references/finviz_screener_filters.md

Step 2: Interpret User Request

Map the user’s natural-language request to FinViz filter codes. Use the Common Concept Mapping table below for quick translation, and reference the full filter list for precise code selection.

Common Concept Mapping:

Step 3: Present Filter Selection

Before executing, present the selected filters in a table for user confirmation:

| Filter Code | Meaning |
|---|---|
| cap_small | Small Cap ($300M–$2B) |
| fa_div_o3 | Dividend Yield > 3% |
| fa_pe_u20 | P/E < 20 |
| geo_usa | USA |

View: Overview (v=111)
Mode: Public / Elite (auto-detected)

Ask the user to confirm or adjust before proceeding.

Step 4: Execute Script

Run the screener script to build the URL and open Chrome:

python3 scripts/open_finviz_screener.py \
  --filters "cap_small,fa_div_o3,fa_pe_u20,geo_usa" \
  --view overview

Script arguments:

• --filters (required): Comma-separated filter codes
• --elite: Force Elite mode (auto-detected from $FINVIZ_API_KEY if not set)
• --view: View type — overview, valuation, financial, technical, ownership, performance, custom
• --order: Sort order (e.g., -marketcap, dividendyield, -change)
• --url-only: Print URL without opening browser

Step 5: Report Results

After opening the screener, report:

1. The constructed URL
2. Elite or Public mode used
3. Summary of applied filters
4. Suggested next steps (e.g., “Sort by dividend yield”, “Switch to Financial view for detailed ratios”)

Resources

• references/finviz_screener_filters.md — Complete filter code reference with natural language keywords (includes industry code examples; full 142-code list is in the Industry Codes section)
• scripts/open_finviz_screener.py — URL builder and Chrome opener